ADB Safegate FLA, User Manual

3.3 Storage

CAUTION

IMPROPER STORAGE

If equipment is to be stored prior to installation, it must be protected from direct sunlight.

Failure to follow this instruction can result in equipment damage

For proper storage, place the box of the product on a shelf or in a warehouse.

3.4 Installation Procedures

WARNING

• Protect from electrostatic discharge.
• The Field Lightning Arrestor assembly must be grounded to a low resistance earth ground.
• Failure to ground the FLA assembly will result in no added protection to the circuit.

Failure to follow this instruction can result in equipment damage

To install the Field Lightning Arrestor (FLA) into the series circuit, perform the following procedure:

1. Determine the specific location for the FLA to be installed in the circuit.

Note

It is recommended that the Field Lightning Arrestor assembly be installed approximately every 2000 feet around

the series circuit starting at the first useable L867/L868 light base can outside the vault on each side of the series

circuit. At the airport’s option, Field Lightning Arrestors may be installed more frequently if it is desired to further

reduce lightning risk.

2. Remove the light fixture from the L867/L868 light base can and disconnect one L-823 connection from the airfield series

circuit. This could be from the L-830 isolation transformer or a splice found in the light base.

3. Plug in the lightning arrestor as shown in the wiring diagram. See 

Figure 1

 and hook-up label on enclosure.

4. After the connection has been made, reinstall heat shrink (in accordance with local heat shrinking practice).
5. Check site plan drawings and specifications to verify the presence and location of the counterpoise lightning wire. Wiring

intended to be connected to a safety ground should not normally be attached to the FLA. See FAA AC 150/5340-30

(current edition) for further discussion about lightning and safety grounds on series circuits.

Note

IF COUNTERPOISE LIGHTNING WIRE IS PRESENT, connect a 4 AWG (minimum) copper grounding wire, to the

ground screw on end of the FLA enclosure and attach the other end of the ground wire to the counterpoise wire

using an appropriate attachment method.

Note

IF COUNTERPOISE LIGHTNING WIRE IS NOT PRESENT, an 8 ft. (min) long copper clad steel grounding rod may

have to be added in the vicinity of the FLA. It may be possible in some locations to add the ground rod through a

pre-existing hole in the bottom of the light base can. Connect ground wire between the grounding screw on the

enclosure using a UL 467 ground lug, or equivalent, and the grounding rod.

Airfield Lighting Field Lightning Arrestor
Installation

8
Copyright 

©

 2017–2018 ADB Safegate, All Rights Reserved